remote exchange (GATHER, SINGLE, [])
    local exchange (GATHER, UNKNOWN, [])
        remote exchange (REPARTITION, ROUND_ROBIN, [])
            final aggregation over (orderpriority)
                local exchange (GATHER, SINGLE, [])
                    remote exchange (REPARTITION, HASH, [orderpriority])
                        partial aggregation over (orderpriority)
                            join (INNER, PARTITIONED):
                                final aggregation over (orderkey_0)
                                    local exchange (GATHER, SINGLE, [])
                                        remote exchange (REPARTITION, HASH, [orderkey_0])
                                            partial aggregation over (orderkey_0)
                                                dynamic filter (orderkey_0::EQUAL)
                                                    scan lineitem
                                local exchange (GATHER, SINGLE, [])
                                    remote exchange (REPARTITION, HASH, [orderkey])
                                        scan orders
